test_backgroundtask_unique_profile.js

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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-

 * vim: sw=4 ts=4 sts=4 et

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

// Run a background task which itself waits for a launched background task, which itself waits for a

// launched background task, etc.  This is an easy way to ensure that tasks are running concurrently

// without requiring concurrency primitives.

add_task(async function test_backgroundtask_unique_profile() {

  let sentinel = Services.uuid.generateUUID().toString();

  sentinel = sentinel.substring(1, sentinel.length - 1);

  let count = 3;

  let stdoutLines = [];

  let exitCode = await do_backgroundtask("unique_profile", {

    extraArgs: [sentinel, count.toString()],

    onStdoutLine: line => stdoutLines.push(line),

});

  Assert.equal(0, exitCode);

  let infos = [];

  let profiles = new Set();

  for (let line of stdoutLines) {

    if (line.includes(sentinel)) {

      let info = JSON.parse(line.split(sentinel)[1]);

      infos.push(info);

      profiles.add(info[1]);

  Assert.equal(

    count,

    profiles.size,

    `Found ${count} distinct profiles: ${JSON.stringify(

      Array.from(profiles)

    )} in: ${JSON.stringify(infos)}`

);

});